Why a2 Milk, Afterpay, Nearmap, & REA Group shares are sinking

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to record a very disappointing decline. At the time of writing, the benchmark index is down 1.05% to 7,097.9 points.

Four ASX shares that are falling more than most today are listed below. Here’s why they are sinking:

A2…